Complete the sentence with the correct preposition: “He is a lecturer ______ English.”
Correct answer: in. A person is a lecturer “in” a subject, so the correct preposition is “in”.
Background: The preposition “in” normally identifies the academic subject or field.
- at: “At” is used for a place or institution, not a subject.
- of: “Of” is much less common here; “lecturer in English” is the standard form.
- off: “Off” does not fit the meaning.
Did you know? We say “professor of English” but “lecturer in English”.
Memory trick: Lecturer IN a subject.